## César Augusto Seronni Filho ([EMAIL PROTECTED]): > Hi guys, I like to know how i can filtering users email on server like that: > I have a smtp+pop3 server and need to Deny some users(or user group) to email > anothers(group or groups) on tha same server.
If you are running exim, set up a system-wide filter. Details can be found in the documentation or on http://www.exim.org. Have a look at the "Exim Filter Specification" under "Documentation and FAQs". For details on implementing a system-wide filter have a look at Nigel Metheringham's system_filter (linked from the main page of exim). If you are running sendmail, you might use a "milter" (see http://www.sendmail.org and http://www.milter.org for details). Postfix can do some filtering based on mail headers, http://www.postfix.org/uce.html has details. A system-wide procmailrc (http://www.procmail.org http://www.ii.com/internet/robots/procmail/qs/) works for every procmail-capable MTA, see the docs of procmail and your MTA for details. However, I don't see any use in filtering mail that way. If they want to mail each other, they will find a way to do so. It gets really easy for them if they are allowed to send mail to destinations not on your server, but with exims filter (or procmail, or similar tools), there will be a way to underrun your filter under most conditions. Regards, cmt -- Spare Space
